Dorman M630896 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder for BMW Z3

The Dorman M630896 brake master cylinder is engineered specifically for BMW Z3 models, providing reliable brake hydraulics performance. Designed with a cast iron construction and a 0.875-inch bore diameter, this master cylinder ensures consistent braking pressure and durability.

• Compatible with BMW Z3 models
• Master cylinder bore diameter: 0.875 inches
• Constructed from durable cast iron material
• Includes 5 outlets for brake line connections
• Rearward outlet size: three M12 x 1.0 threads
• Secondary outlet thread diameter: two M12 x 1.0 threads
• Removable reservoir type (reservoir not included)
• Mounting hardware and sensor not included

Detailed Product Description

The Dorman M630896 brake master cylinder is a critical component in the brake hydraulics system of the BMW Z3. Its cast iron body offers strength and resistance to wear, while the 0.875-inch bore diameter is designed to provide precise hydraulic pressure for effective braking. This master cylinder features five outlets, including three rearward outlets and two secondary outlets, all threaded M12 x 1.0, allowing for secure and proper brake line connections. The removable reservoir design facilitates maintenance, although the reservoir itself is not included with this part. This master cylinder does not come with mounting hardware or sensors, so those components must be sourced separately if needed.

Common Applications and Issues Addressed

• Restores proper hydraulic pressure in BMW Z3 brake systems
• Replaces worn or leaking master cylinders causing brake fluid loss
• Solves inconsistent brake pedal feel or sponginess
• Addresses brake failure symptoms due to internal cylinder wear
• Supports brake system rebuilds requiring a reliable master cylinder

Installation Notes and Tips

• Ensure compatibility with BMW Z3 model year before installation
• Brake fluid reservoir must be transferred or replaced separately
• Bleed brake system thoroughly after installation to remove air
• Verify all outlet connections use correct M12 x 1.0 fittings
• Mounting hardware is not included; reuse existing hardware or acquire new parts as needed

Quality Assurance and Warranty

Dorman manufactures the M630896 brake master cylinder to meet or exceed OEM specifications for fit and function on BMW Z3 vehicles. The cast iron construction provides durability under normal operating conditions. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in material and workmanship. It is recommended to consult the product packaging or Dorman’s official resources for exact warranty terms.